首先,我是 JavaScript 和编码新手。其次,我正在使用 JavaScript 编写一个书店项目,并带有一条显示每个客户的总因子的警报消息。但警报消息显示了我的函数“printFactor”的代码,其中插入了该函数生成的字符串。这是我的代码:
function Book(name, writer, date, price)
{
this.name = name;
this.writer = writer;
this.date = date;
this.price = price;
}
function Customer(name, gender, turn)
{
this.name = name;
this.gender = gender;
this.turn = turn;
this.numberOfBooks = 0;
this.totalSum = 0;
this.bookList = [new Book("-", "-", "-", 0)];
//Functions.
this.addBook = function (newBook) {
this.numberOfBooks++;
this.bookList.push(newBook);
};
this.printFactor = function () {
var message = "";
if (this.numberOfBooks === 0) {
message = "No Books Has Been Added to Book List!";
return (message);
}
else {
message = this.name + " " + this.gender + " Number of Books: " + this.numberOfBooks + " Customer's Turn: " + this.turn + "\nBooks:\n";
var i;
var newMessage;
for (i = bookList.length - 1; i > 0; i--) {
newMessage = bookList[i].name + " " + bookList[i].writer + " " + bookList[i].date + " " + bookList[i].price.toString() +"\n" ;
message += newMessage;
this.totalSum += bookList[i].price;
this.bookList.pop();
}
newMessage = "Total Sum: " + this.totalSum;
message += newMessage;
return (message);
}
};
}
var book = new Book("Faramarz Bio", "Faramarz Falsafi Nejad", "1377/04/29", 13000);
var faramarz = new Customer("faramarz", "Male", 3);
faramarz.addBook(book);
faramarz.addBook(book);
faramarz.addBook(book);
faramarz.addBook(book);
var m = faramarz.printFactor;
window.alert(m);
最佳答案
您需要调用该函数:
var m = faramarz.printFactor();
关于javascript 警报显示代码而不是字符串,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/53708526/